Well, not the specific "you" referring to me; I use my Android Box (Chromecast with Google TV would work also) for Japanese IPTV. This cannot be installed on the plain old Chromecast. Furthermore, that IPTV application, though it runs well on phones, is one of those that doesn't cast.
We use casting quite a lot in my household, but only for a handful of things that can't be installed on Android TV. The UX of Chromecast is sub-par compared to just using an installed app with the remote, but Chromecast plugs the gaps: connecting mobile-only content to the living room TV.
We use casting quite a lot in my household, but only for a handful of things that can't be installed on Android TV. The UX of Chromecast is sub-par compared to just using an installed app with the remote, but Chromecast plugs the gaps: connecting mobile-only content to the living room TV.